CN109062327B

CN109062327B - Control device for computer function

Info

Publication number: CN109062327B
Application number: CN201810744991.2A
Authority: CN
Inventors: 刘艳辉; 张玉霞; 张志刚; 乔德军; 丁万宁
Original assignee: Handan College
Current assignee: Guangdong Changsheng Intelligent Equipment Co ltd
Priority date: 2018-07-09
Filing date: 2018-07-09
Publication date: 2021-04-13
Anticipated expiration: 2038-07-09
Also published as: CN109062327A

Abstract

The utility model provides a controlling means of computer function, includes the base, the preceding middle part fixed connection electric putter's of base rear end, the back of electric putter's front end fixed connection plectane, the central line collineation of plectane and electric putter, the rear end of the preceding fixed connection several driving lever of plectane, driving lever evenly distributed in the front of plectane, the back of bearing joint support seat is passed through respectively to the preceding both sides of base, two annular plates of periphery suit of every supporting seat, the annular plate respectively with corresponding supporting seat fixed connection. The user can realize the purpose of adjusting only one display by controlling the electric push rod, and the use requirements of people are met; the display can rotate relatively stably to avoid tearing the circuit connected with the display, thereby causing the circuit to break away from or even damage the display, and the safety in utilization improves greatly.

Description

Control device for computer function

Technical Field

The invention belongs to the technical field of electronic information, and particularly relates to a control device of computer functions.

Background

At present, many people need to use two displays during work, and particularly with the vigorous development of the electronic competition and live broadcast industries, the requirements of people on the functions of computers are increasingly increased. Because the electricity is competed and live practitioner usually need use two displays to supply to show different interfaces and satisfy its work demand, because the display size of its use is great again, consequently the angle of the regulation display of being not convenient for, directly rotate the display with the hand during the regulation usually, can't realize careful regulation, and can't adjust the angle of two displays simultaneously.

Disclosure of Invention

The invention provides a control device of computer functions, which is used for solving the defects in the prior art.

The invention is realized by the following technical scheme:

a control device of computer function comprises a base, the front middle part of the base is fixedly connected with the rear end of an electric push rod, the front end of the electric push rod is fixedly connected with the back surface of a circular plate, the circular plate is collinear with the central line of the electric push rod, the front surface of the circular plate is fixedly connected with the rear ends of a plurality of deflector rods, the deflector rods are uniformly distributed in the front surface of the circular plate, the front two sides of the base are respectively connected with the back surface of a supporting seat through bearings, two annular plates are sleeved on the periphery of each supporting seat and are respectively and fixedly connected with the corresponding supporting seats, a plurality of deflector rods are arranged between the two annular plates on each supporting seat, the front end and the rear end of each deflector rod are respectively and simultaneously fixedly connected with the corresponding annular plates, the supporting seats respectively penetrate through the corresponding deflector rods, strip-shaped rods are respectively arranged on the front two sides of, staggered arrangement between the bar, several semicircle grooves are seted up respectively to the bottom surface of one of them bar and the top surface of another bar, both sides all communicate with each other with the external world around the semicircle groove, one of them driving lever on the plectane and one of them driving lever outside the supporting seat can be located corresponding semicircle inslot simultaneously respectively, every bar can simultaneously with the plectane on the plectane, the driving lever meshing outside the supporting seat that corresponds, the one end of bearing connecting screw rod is passed through respectively to the outer end of bar, the screw rod is the wide range screw rod, the preceding both sides of base are fixed mounting nut respectively, the nut is the wide range nut, the screw rod passes and screw-thread fit with it in following the nut that corresponds respectively, the quad slit is seted up respectively to the other end.

The control device for the computer function is characterized in that the periphery of the other end of each screw is provided with a plurality of clamping grooves, the distance between every two adjacent clamping grooves on each screw is equal, one side of the front surface of the base is movably provided with a motor which is a stepping motor, one side of the front surface of the base is provided with a guide device based on the motor, the guide device faces towards the screws, the motor can slide along the guide device, the periphery of an output shaft of the motor is fixedly connected with one side of the inner wall of the connecting sleeve, the other side of the inner wall of the connecting sleeve is provided with a plurality of strip-shaped through grooves which are uniformly distributed on the inner wall of the connecting sleeve, the inner sides of the strip-shaped through grooves are communicated with the inside of the connecting sleeve, the outer sides and the outer ends of the strip-shaped through grooves are communicated with the outside, the connecting sleeve is, the periphery of the connecting sleeve is sleeved with a spiral ring, and the spiral ring is in threaded fit with the connecting sleeve.

The control device of the computer function comprises a sliding groove and a roller, wherein two parallel sliding grooves are respectively formed in two sides of the front surface of the base, the roller is fixedly installed at four corners of the back surface of the motor respectively, the roller can be respectively and simultaneously located in the corresponding sliding grooves, the periphery of the back of the roller can be respectively in contact fit with the inner walls of the corresponding sliding grooves, and the roller can respectively and simultaneously slide along the corresponding sliding grooves.

The guide device of the bar-shaped rods comprises fixing plates and T-shaped blocks, wherein the two sides of the front surface of the base are fixedly connected with the back surfaces of the fixing plates respectively, the fixing plates are parallel to the corresponding bar-shaped rods respectively, T-shaped grooves are formed in the top surface of one bar-shaped rod and the bottom surface of the other bar-shaped rod respectively, the T-shaped blocks are located in the corresponding T-shaped grooves respectively and can slide along the corresponding T-shaped grooves respectively, and the T-shaped blocks are fixedly connected with the corresponding fixing plates respectively.

According to the control device for the computer functions, the plurality of rib plates are arranged behind the bar-shaped rods respectively and correspond to the fixing plates one to one, the rib plates are fixedly connected with the corresponding fixing plates respectively, the front surfaces of the rib plates are provided with the spherical grooves respectively, the balls are movably arranged in the spherical grooves respectively and can rotate in the corresponding spherical grooves respectively, and the peripheries of the balls are in contact fit with the back surfaces of the corresponding bar-shaped rods respectively.

The control device of computer function as described above, the base is an inverted V-shaped structure, and the included angle between the two sides of the bottom surface of the base is α, α = 120-.

The invention has the advantages that: the invention is suitable for scenes needing to use two or more computer monitors at the same time, the two monitors are respectively and fixedly arranged on the supporting seat, the invention also comprises an L-shaped rod, the cross section area of the L-shaped rod is square, one rod of the L-shaped rod can be inserted into one square hole, the periphery of the L-shaped rod can be in contact fit with the inner wall of the corresponding square hole, a user can drive the corresponding screw rod to rotate by rotating the L-shaped rod, the screw rod is in threaded fit with the nut, the nut is fixedly arranged on the base, so that the screw rod can move along the extension line of the central line of the nut while rotating, the screw rod is fixedly connected with the bar-shaped rod, the screw rod can drive the bar-shaped rod to move, the bar-shaped rod can respectively drive the circular plate and the supporting seat to rotate simultaneously through the mutual fit between the deflector rod and the semicircular groove, the two bar-, therefore, the two supporting seats rotate synchronously, but the rotating directions of the two supporting seats are opposite, so that the angle between the two displays can be adjusted simultaneously; the user controls the electric push rod to contract, can drive the circular plate to move backwards, and the driving lever on the circular plate is not engaged with the bar rod any longer, and when one of the screw rods is adjusted, the other screw rod can not be driven to move, so that only one display can be adjusted. The rotation of the supporting seat is realized through the mutual matching of the bar-shaped rod, the semicircular groove and the deflector rod, so that the angle of the display is adjusted, the deflector rod is a cylindrical rod, the noise is extremely low when the semicircular groove is meshed with the deflector rod, and the use experience of people can be improved; the movement of the bar-shaped rods is realized through the mutual matching of the screw rod and the nut, the distance for driving the bar-shaped rods to move is smaller after the screw rod rotates for a circle by taking the screw rod as a center, and the more detailed adjustment of the angle between the displays is facilitated for a user, for example, 36 shift rods are arranged on the periphery of the supporting seat, when the bar-shaped rods move for the distance of a semicircular groove, the supporting seat can be driven to rotate for 10 degrees, and the angle between the displays can be adjusted more freely by the user; the user can realize the purpose of adjusting only one display by controlling the electric push rod, and the use requirements of people are met; the display can rotate relatively stably to avoid tearing the circuit connected with the display, thereby causing the circuit to break away from or even damage the display, and the safety in utilization improves greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention; FIG. 2 is an enlarged view of section I of FIG. 1; FIG. 3 is an enlarged view of the view from the direction A of FIG. 1; FIG. 4 is an enlarged view of the view of FIG. 1 taken along line B; FIG. 5 is an enlarged view of the view of FIG. 1 taken along line C; fig. 6 is an enlarged view of the view from direction D of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A control device of computer function, as shown in the figure, comprises a base 1, the front middle part of the base 1 is fixedly connected with the rear end of an electric push rod 2, the front end of the electric push rod 2 is fixedly connected with the back of a circular plate 3, the circular plate 3 is collinear with the central line of the electric push rod 2, the front of the circular plate 3 is fixedly connected with the rear ends of a plurality of deflector rods 4, the deflector rods 4 are uniformly distributed in the front of the circular plate 3, the front two sides of the base 1 are respectively connected with the back of a support seat 5 through bearings, two annular plates 6 are sleeved on the periphery of each support seat 5, the annular plates 6 are respectively and fixedly connected with the corresponding support seats 5, a plurality of deflector rods 4 are arranged between the two annular plates 6 on each support seat 5, the front and rear ends of the deflector rods 4 are respectively and fixedly connected with the corresponding annular plates 6, the support seats 5 respectively pass through the corresponding deflector rods 4, the front two sides of the, the bar-shaped rods 7 can respectively slide along the corresponding guiding devices, the bar-shaped rods 7 are arranged in a staggered way, the bottom surface of one bar-shaped rod 7 and the top surface of the other bar-shaped rod 7 are respectively provided with a plurality of semi-circular grooves 8, the front and back surfaces of the semi-circular grooves 8 are communicated with the outside, one of the shift levers 4 on the circular plate 3 and one of the shift levers 4 outside the supporting seat 5 can be respectively and simultaneously positioned in the corresponding semi-circular grooves 8, each bar-shaped rod 7 can be simultaneously connected with the shift lever 4 on the circular plate 3, the driving levers 4 outside the corresponding supporting seats 5 are meshed, the outer ends of the strip-shaped rods 7 are respectively connected with one ends of screw rods 9 through bearings, the screw rods 9 are wide-distance screw rods, nuts 10 are fixedly installed on two front sides of the base 1 respectively, the nuts 10 are wide-distance nuts, the screw rods 9 respectively penetrate through the corresponding nuts 10 and are in threaded fit with the corresponding nuts, and square holes 11 are formed in the other ends of the screw rods 9 respectively. The invention is suitable for a scene needing to use two or more computer monitors at the same time, the two monitors are respectively and fixedly arranged on a supporting seat 4, the invention also comprises an L-shaped rod, the cross section area of the L-shaped rod is square, one rod of the L-shaped rod can be inserted into one square hole 11, the periphery of the L-shaped rod can be in contact fit with the inner wall of the corresponding square hole 11, a user can drive the corresponding screw 9 to rotate by rotating the L-shaped rod, because the screw 9 is in threaded fit with the nut 10, and the nut 10 is fixedly arranged on the base 1, the screw 9 can move along the extension line of the central line of the nut 10 while rotating, the screw 9 is fixedly connected with the bar-shaped rod 7, the bar-shaped rod 7 can be driven by the screw 9 to move, and the bar-shaped rod 7 can respectively drive the circular plate 3 and the supporting seat 5 to rotate simultaneously through the mutual fit between the deflector, the two bar-shaped rods 7 are arranged in a staggered mode, and the circular plate 3 can drive the other bar-shaped rod 7 to move, so that the two supporting seats 5 rotate synchronously, but the rotating directions of the two supporting seats 5 are opposite, and the angle between the two displays can be adjusted simultaneously; the user controls the electric push rod 2 to contract, so that the circular plate 3 can be driven to move backwards, the shift lever 4 on the circular plate 3 is not meshed with the bar-shaped rod 7 any more, and when one screw 9 is adjusted, the other screw 9 cannot be driven to move, so that only one display can be adjusted. According to the invention, the rotation of the supporting seat 5 is realized through the mutual matching of the bar-shaped rod 7, the semi-circular groove 8 and the deflector rod 4, so that the adjustment of the angle of the display is realized, the deflector rod 4 is a cylindrical rod, the noise is extremely low when the semi-circular groove 8 is meshed with the deflector rod 4, and the use experience of people can be improved; the movement of the bar-shaped rod 7 is realized through the mutual matching of the screw rod 9 and the nut 10, the distance for driving the bar-shaped rod 7 to move is smaller after the screw rod 9 rotates for a circle by taking the screw rod 9 as a center, which is beneficial to a user to more finely adjust the angle between the displays, for example, 36 shift levers 4 are arranged on the periphery of the supporting seat 5, when the bar-shaped rod 7 moves for the distance of one semicircular groove 8, the supporting seat 5 can be driven to rotate for 10 degrees, and the user can more freely adjust the angle between the displays; the user can realize the purpose of adjusting only one display by controlling the electric push rod 3, thereby more meeting the use requirements of people; the display can rotate relatively stably to avoid tearing the circuit connected with the display, thereby causing the circuit to break away from or even damage the display, and the safety in utilization improves greatly.

Specifically, in order to adjust the angle between two displays, in this embodiment, a plurality of slots 12 are formed in the periphery of the other end of the screw 9, the distance between every two adjacent slots 12 on each screw 9 is equal, a motor 13 is movably installed on one side of the front surface of the base 1, the motor 13 is a stepping motor, a guide device based on the motor 13 is arranged on one side of the front surface of the base 1, the guide device faces the screw 9, the motor 13 can slide along the guide device, the periphery of an output shaft of the motor 13 is fixedly connected to one side of the inner wall of the connecting sleeve 14, a plurality of strip-shaped through grooves 15 are formed in the other side of the inner wall of the connecting sleeve 14, the strip-shaped through grooves 15 are uniformly distributed on the inner wall of the connecting sleeve 14, the inner sides of the strip-shaped through grooves 15 are communicated with the inside of the connecting sleeve 14, the outer, the clamping blocks 16 can be clamped into the corresponding clamping grooves 12 respectively and simultaneously, external threads are formed on the periphery of the connecting sleeve 14, a spiral ring 17 is sleeved on the periphery of the connecting sleeve 14, and the spiral ring 17 is in threaded fit with the connecting sleeve 14. The user makes motor 13 move to screw rod 9 along guider, until the other end of screw rod 9 inserts in the adapter sleeve 14, adapter sleeve 14 is the elasticity material, because be equipped with the strip on the adapter sleeve 14 and pass through groove 15, make the opposite side of adapter sleeve 14 can take place elastic deformation, fixture block 16 can block into in draw-in groove 12, then rotatory spiro 17, make spiro 17 move towards screw rod 9, spiro 17 can make the inner wall opposite side of adapter sleeve 14 and the periphery close contact cooperation of screw rod 9, the periphery of fixture block 16 and the inner wall close contact cooperation of draw-in groove 12, thereby can make screw rod 17 and motor 13's output shaft connect, screw rod 17 can rotate with motor 13's output shaft synchronization, start motor 13 just can drive screw rod 17 and rotate, thereby can make things convenient for laborsaving adjusting screw rod 17 more, in order to reach the purpose of adjusting the display angle.

Specifically, in order to make the motor 13 move stably and smoothly, the guide device of the motor 13 described in this embodiment includes a sliding groove 18 and a roller 19, two sliding grooves 18 parallel to each other are respectively formed on two sides of the front surface of the base 1, the roller 19 is fixedly mounted on four corners of the back surface of the motor 13, the roller 19 can be respectively and simultaneously located in the corresponding sliding groove 18, the periphery of the back portion of the roller 19 can be respectively in contact fit with the inner wall of the corresponding sliding groove 18, and the roller 19 can respectively and simultaneously slide along the corresponding sliding groove 18. The sliding grooves 18 are respectively parallel to the corresponding screw rods 9, so that the motor 13 can move towards the screw rods 9, the rollers 19 can respectively roll in the corresponding sliding grooves 18, the friction force between the motor 13 and the guiding device thereof can be reduced, and the motor 13 can run more smoothly.

Further, for the effective guide effect to bar 7, the guiding device of bar 7 described in this embodiment includes fixed plate 20 and T-shaped block 21, the back of several fixed plates 20 is fixed respectively to the preceding both sides of base 1, fixed plate 20 is parallel to corresponding bar 7 respectively, T-shaped groove 22 is seted up respectively to the top surface of one of bar 7 and the bottom surface of another bar 7, T-shaped block 21 is located corresponding T-shaped groove 22 respectively, and T-shaped block 21 can slide along corresponding T-shaped groove 22 respectively, T-shaped block 21 respectively with corresponding fixed plate 20 fixed connection. Through the mutual cooperation between the T-shaped block 21 and the T-shaped groove 22, the bar-shaped rod 7 can move along the direction of the T-shaped block 21, the bar-shaped rod 7 is ensured to be meshed with the deflector rod 4 on the circular plate 3 and the deflector rod 4 outside the corresponding supporting seat 5, and the invention has enough operation stability and reliability.

Furthermore, as shown in fig. 5, a plurality of rib plates 23 are respectively disposed behind the bar-shaped rods 7 in the embodiment, the rib plates 23 correspond to the fixing plates 20 one by one, the rib plates 23 are respectively fixedly connected to the corresponding fixing plates 20, spherical grooves 24 are respectively formed in the front surfaces of the rib plates 23, balls 25 are respectively movably mounted in the spherical grooves 24, the balls 25 can respectively rotate in the corresponding spherical grooves 24, and the peripheries of the balls 25 are respectively in contact fit with the back surfaces of the corresponding bar-shaped rods 7. The structure can further support the bar-shaped rod 7, and because the contact surface between the ball 25 and the bar-shaped rod 7 is extremely small, the friction force between the bar-shaped rod 7 and the ball 25 is extremely small and can be ignored, and no adverse effect is generated on the operation of the bar-shaped rod 7, so that the structural strength and the operation stability of the invention can be further enhanced.

Further, as shown in fig. 1, the base 1 of the present embodiment is an inverted V-shaped structure, and two bar-shaped rods 7 are arranged in front of and behind each other. So as to avoid obstructing the movement of the bar-shaped rod 7, the included angle between the two sides of the bottom surface of the base 1 is α, α = 120 and 150 °. The structure is in triangular contact with the desktop, so that the base 1 can stand on the desktop more stably, and the display is prevented from shaking due to an accident.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A control device for computer functions, characterized in that: comprises a base (1), the front middle part of the base (1) is fixedly connected with the rear end of an electric push rod (2), the front end of the electric push rod (2) is fixedly connected with the back of a circular plate (3), the circular plate (3) and the central line of the electric push rod (2) are collinear, the front of the circular plate (3) is fixedly connected with the rear ends of a plurality of shift levers (4), the shift levers (4) are uniformly distributed in the front of the circular plate (3), the front two sides of the base (1) are respectively connected with the back of a supporting seat (5) through bearings, two annular plates (6) are sleeved on the periphery of each supporting seat (5), the annular plates (6) are respectively and fixedly connected with the corresponding supporting seats (5), a plurality of shift levers (4) are arranged between the two annular plates (6) on each supporting seat (5), the front end and the rear end of each shift lever (4) are respectively and fixedly connected with the corresponding annular plates (6), the front two sides of the base (1) are respectively provided with a bar-shaped rod (7), the front two sides of the base (1) are respectively fixedly provided with a guide device based on the bar-shaped rods (7), the bar-shaped rods (7) can respectively slide along the corresponding guide devices, the bar-shaped rods (7) are arranged in a staggered manner, the bottom surface of one bar-shaped rod (7) and the top surface of the other bar-shaped rod (7) are respectively provided with a plurality of semicircular grooves (8), the front and back surfaces of the semicircular grooves (8) are communicated with the outside, one of the deflector rods (4) on the circular plate (3) and one of the deflector rods (4) outside the supporting seat (5) can be respectively and simultaneously positioned in the corresponding semicircular grooves (8), each bar-shaped rod (7) can be simultaneously engaged with the deflector rod (4) on the circular plate (3) and the deflector rod (4) outside the corresponding supporting seat (5), the outer ends of the bar-shaped rods (7) are, screw rod (9) are the wide range screw rod, preceding both sides of base (1) are fixed mounting nut (10) respectively, nut (10) are the wide range nut, screw rod (9) are respectively from corresponding nut (10) interior pass and screw-thread fit with it, quad slit (11) are seted up respectively to the other end of screw rod (9), still include an L type pole, the cross sectional area of L type pole is square, one of them pole of L type pole can insert to one of them quad slit (11) in, and the periphery of L type pole can with the inner wall contact cooperation of corresponding quad slit (11).

2. The control device of computer functions according to claim 1, characterized in that: the outer periphery of the other end of each screw rod (9) is provided with a plurality of clamping grooves (12), the distance between every two adjacent clamping grooves (12) on each screw rod (9) is equal, a motor (13) is movably mounted on one side of the front surface of the base (1), the motor (13) is a stepping motor, a guide device based on the motor (13) is arranged on one side of the front surface of the base (1) and faces towards the screw rods (9), the motor (13) can slide along the guide device, the outer periphery of an output shaft of the motor (13) is fixedly connected with one side of the inner wall of the connecting sleeve (14), a plurality of strip-shaped through grooves (15) are formed in the other side of the inner wall of the connecting sleeve (14), the strip-shaped through grooves (15) are uniformly distributed on the inner wall of the connecting sleeve (14), the inner sides of the strip-shaped through grooves (15) are communicated with the inside of the connecting sleeve, the inner wall of the connecting sleeve (14) is fixedly provided with a plurality of clamping blocks (16), the clamping blocks (16) can be clamped into the corresponding clamping grooves (12) respectively and simultaneously, external threads are formed in the periphery of the connecting sleeve (14), the periphery of the connecting sleeve (14) is sleeved with a spiral ring (17), and the spiral ring (17) is in threaded fit with the connecting sleeve (14).

3. The control device of computer functions according to claim 2, characterized in that: the guiding device of the motor (13) comprises sliding grooves (18) and rollers (19), two parallel sliding grooves (18) are formed in two sides of the front face of the base (1) respectively, the rollers (19) are fixedly mounted at four corners of the back face of the motor (13) respectively, the rollers (19) can be located in the corresponding sliding grooves (18) respectively and simultaneously, the periphery of the back of each roller (19) can be in contact fit with the inner wall of the corresponding sliding groove (18) respectively, and the rollers (19) can slide along the corresponding sliding grooves (18) respectively and simultaneously.

4. The control device of computer functions according to claim 1, characterized in that: the guider of bar pole (7) include fixed plate (20) and T type piece (21), the back of fixed connection several fixed plate (20) is distinguished to the preceding both sides of base (1), fixed plate (20) are on a parallel with corresponding bar pole (7) respectively, T type groove (22) are seted up respectively to the top surface of one of them bar pole (7) and the bottom surface of another bar pole (7), T type piece (21) are located corresponding T type groove (22) respectively, and T type piece (21) can slide along corresponding T type groove (22) respectively, T type piece (21) respectively with corresponding fixed plate (20) fixed connection.

5. The apparatus for controlling computer functions of claim 4, wherein: the rear of bar (7) be equipped with several floor (23) respectively, floor (23) and fixed plate (20) one-to-one, floor (23) respectively with fixed plate (20) fixed connection that corresponds, spherical groove (24) are seted up respectively in the front of floor (23), movable mounting ball (25) respectively in spherical groove (24), ball (25) can be respectively at the spherical groove (24) internal rotation that corresponds, the periphery of ball (25) respectively with the back contact cooperation of bar (7) that corresponds.

6. The control device of computer functions according to claim 1, characterized in that: the base (1) is of an inverted V-shaped structure, an included angle between two sides of the bottom surface of the base (1) is alpha, and alpha = 120-150 degrees.